Improvement in drain-pipe machines



1 A. J. DAVIS. Improvement Machine formakihg Drain Pipe.

Pate n td Nov. 2!,1871.

PATENT OEEIoE.

ALBERT J. DAVIS, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN DRAIN-PIPE MACHINES.

Specification forming part of Letters Patent No. 121,160, dated November 21, 1871.

To all whom it may concern: 7

Be it known that I, ALBERT J DAvIs, of the city of Newark, in the county of Essex and State of New Jersey, have made certain Improvements in the Construction of Machinesfor MakingEarthen Drain-Pipes, of which the following is a specification:

My invention relates to the manner of adapt ing a screw to the machinery for making drainpipe by power, and in providing for its being used with convenience and requisite speed.

In the accompanying drawing, Figure 1 is a front view, in section, of a machine with the improvements. Fig. 2 is a side view of the same. Fig. 3 is the screw-nut and revolving box. Fig. 4 is the guide and rollers that form part of a friction-reducing collar, and Fig. 5 is a top view of the receiving-cylinder for the clay.

A is the frame, requiring strength for resistance of an endwise pressure within itself. B is a nonrevolving perpendicularly traveling screw, its downward movementdepending upon the box 0, within which is the sectional clasp-nut D and E, Fig. 3, made to clasp or release the screw B by the lever F. To the under side of the box 0 the bevel gear-wheel G is permanently secured, revolving motion being given by the pinion H and pulleys I. The screw B has a perforation, central in its length, through which the large rod J hangs suspended, being secured to the top bar K of the frame. To the lower end of this rod core-blocks are secured, the thickness of the clay pipes being determined by the space between the core L and the cylinder M. On the lower end of the screw B is a piston, N, that fits the interior of the cylinder M, by which the clay is pressed by the screw out of the bottom of the cylinder. In this piston is the valve 0, for the admission of air into the cylinder as the piston is withdrawn. P is a wheel, and Q is a pinion, by which the barrel R is made to revolve, winding thereupon the chains attached to the cross-bar S on the top end of the screw B. The nut being unclasped -from the screw, screw and piston are quickly lifted thereby, and the cylinder is then ready for another charge with the clay. The under side of the bevel gear-wheel G rests upon the lower cross-rail T. Between the brace middle rail U and the nut-box O the rings, Fig. 4, with the conical wheels in them, are placed, the under side of the rail U and the top of the box 0 having corresponding bevels, on which the conical wheels travel; the friction is thereby greatly reduced, when the pressure upon the clay comes upon the revolving nut-box O and the under side of the bar U.

The cylinder is filled with clay, the nut is closed upon the screw; by revolving it presses the piston upon the clay, forcing it past the core in a continuous cylinder, which is out into required lengths as it hangs from the machine. When the piston is down to the core-block the nut is unclasped, the screw hoisted, the process of filling and pressing being repeated.

What I claim as my improvements are 1. The arrangement, herein shown, of the screw B, revolving clamp-nut D E, box G, and bevelgear G, as and for the purpose described.

2. The arrangement, herein shown, of thc'hollow screw B, shaft J, clamp-nut D E, box 0, and bevel-gear G, as and for the purpose set forth.

3. The combination of the hollow screw B, shaft J, box G, friction-collar and rollers, and gear G, constructed and arranged to operate as set forth.

4. The combination of the hollow screwB, shaft J, piston N provided with valve 0, case M, and die L, when constructed and operating as and for the purpose set forth.

ALBERT J. DAVIS.

Witnesses:

W. M. GOODING', 

